Baby's weight @ 12wks confusing me to no end 😕

Verushka
Hi all, 
So today I had my 12wk appointment, thankfully all looks good. I'm just curious I'm 12w5d and baby weighs 59grams.
According to glow and just basic Guidelines on the net, the baby should be 14grams or there about? 
I asked the doctor and he says the baby's weight is progressing normally. I'm confused🤔. Please share your baby's weight at about 12wks or any thoughts on this...thanks in advance😉